Avogadro - Study guides, Class notes & Summaries
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past papers questions chemistry - November 2020 AS paper 1, 2017 paper 2 A level, paper 1 2019 A level Questions and Answers 100% Pass | Updated 2024
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past papers questions chemistry - November 
2020 AS paper 1, 2017 paper 2 A level, paper 1 
2019 A level Questions and Answers 100% 
Pass | Updated 2024 
This question is about atomic structure.There is a general trend for an increase in 
ionisation energy across Period 3. 
Give one example of an element that deviates from this trend. Explain why this 
deviation occurs. - Correct Answer ️️ -Aluminium / Al(Outer) electron in (3)p orbital / 
sub-shell (level) 
(3p) higher in energy / slightly ...
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Chemistry 111 Key PASSED Questions and CORRECT Answers
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Density - ratio of substances mass to volume. Intensive property- meaning the value is 
independent of the amount of substance 
Avogadro number - 6.022 x 10^22, 1 mole, term of measurement 
dimensional analysis - A method of using conversion factors and unit canceling to solve 
a unit conversion problem. 
exothermic - chemical reaction that yields a net release of energy in the form of heat 
endothermic - (of a chemical reaction or compound) occurring or formed with 
absorption of heat 
kinet...
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A-level Physics data and formulae
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A-level Physics data and formulae 
 
For use in exams from the June 2017 Series onwards 
 
DATA - FUNDAMENTAL CONSTANTS AND VALUES 
Quantity speed of light in vacuo permeability of free space permittivity of free space 
magnitude of the charge of electron the Planck constant 
gravitational constant the Avogadro constant molar gas constant 
the Boltzmann constant the Stefan constant 
the Wien constant electron rest mass (equivalent to 5.5 × 10–4 u) 
magnitude of electron charge/mass ratio prot...
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Chapter 7 Moles and Molar Mass exam with 100% Correct answers already graded A+
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Avogadro's Number 
in honor of Amadeo Avogadro 
() 
 
 
 
The mole (mol) 
The unit for counting atoms. 
 
The mole is a unit for counting just as a dozen or a ream or a gross is used to count. 
 
 
 
Atomic mass for an element 
The average relative mass of all the isotopes for the element. 
 
 
 
1 mole atoms = 
 
 
 
1 mole molecules = 
 
 
 
The atomic mass of an element in grams contains (2) 
The atomic mass of an element in grams contains... 
 
(1) Avogadro's number of atoms (2) and is def...
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Chem 120 Final Exam | Questions and Correct Answers | Latest Update 2024/2025 | 100% Pass
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Chem 120 Final Exam | 
Questions and Correct 
Answers | Latest Update 
2024/2025 | 100% Pass 
molecular mass (molecular weight) - Answer -the sum of the atomic 
masses, in atomic mass units, of all the atoms in the formula of a 
compound 
empirical formula - Answer -a chemical formula showing the ratio of 
elements in a compound rather than the total number of atoms 
Avogadro's number (Mole) - Answer -6.02 x 10^23 
proton - Answer -A subatomic particle that has a positive charge and 
that is ...
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CHEM 103 Exam 2 Prep Test Questions And All Correct Answers.
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What is a chemical formula? - Answer a combination of symbols of the various elements that make up the compound 
 
Define Molar Mass - Answer The sum of atomic masses, based on chemical formula 
 
What are the units of Molar Mass (MM) - Answer Grams/Mole (g/mol) 
 
Number of moles can be found by - Answer a. Atoms of an element 
b. Molecules of a molecular compound 
 
One Mole equals ? - Answer Avogardo's number = 
6.022 x 10^23 atoms/molecules 
 
How do you calculate molecules and ...
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AS Physics data and formulae
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AS Physics data and formulae 
 
 
For use in exams from the June 2016 Series onwards 
DATA - FUNDAMENTAL CONSTANTS AND VALUES 
 
 
 
speed of light in vacuo permeability of free space permittivity of free space 
magnitude of the charge of electron 
the Planck constant gravitational constant the Avogadro constant molar gas constant 
the Boltzmann constant the Stefan constant 
the Wien constant 
electron rest mass 
 

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CRS 101 FINAL EXAM STUDY GUIDE 100% Accurate
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Describe the AARC (American Association for Respiratory Care) - ANSWER-began as ITA 
-professional organization of RTs 
-goal: advocates for the profession to legislative and regulatory bodies and is affiliated with all 50 state respiratory societies 
 
Describe CoARC (Commission on Accreditation for Respiratory care) - ANSWER-(1996) accredits and establishes respiratory care educational programs in the US 
-previously called: JRCTE 
 
Describe the NBRC (National Board of Respiratory Care) - ANS...
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Physics 9702 A2 Level Definitions
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Absolute Zero - correct answer-The theoretical temperature at which the molecules of a 
substance have the lowest energy and hence the substance has minimum internal energy 
and no kinetic energy 
acoustic impedance - correct answer-product of density of medium and speed of sound in 
medium 
Activity - correct answer-The number of atoms of a radioactive substance that decay per unit 
time. 
amplitude modulation - correct answer-amplitude of carrier wave varies in synchrony with the 
displacement...
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AQA AS level Chemistry exam 2024 questions with 100% correct answers
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AQA AS level Chemistry exam 2024 questions 
with 100% correct answers 
Nucleons - ANSWERS Protons and neutrons 
Electrons (location) - ANSWERS Surrounding the nucleus 
Relative mass of an electron - ANSWERS 1/1840 
Strong nuclear force - ANSWERS The way protons and neutrons are held together in 
the nucleus 
Electrostatic forces - ANSWERS The attraction between protons and electrons that 
hold them together in the atom 
Atomic Number (Z) - ANSWERS The number of protons in the nucleus 
Mass nu...
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